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Marquise|Natural|GIA

0.40ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 3565276725

Certificate GIA 3565276725

Diamond specifications and retailer prices

From $584 AUD
HK$3,200 HKD
As of November 1, 2026
Save $472 AUD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,582 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3565276725. Listed at 14 retailers as of October 30, 2026, with a 81% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.40
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle37.7°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 3565276725
Dimensions7.59 × 3.71 × 2.42 mm
L/W Ratio2.05
Girdle conditionFaceted
Culet sizeNone
Top View
7.59 mm3.71 mm0.40 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3565276725
Side View
Table 59.0%Crown 37.7°Girdle: STK-VTKPavilion 40.4°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,582 AUD|Low: $541 AUD|High: $2,698 AUD|Avg: $1,021 AUD|-3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 10$584 AUD
Retailer 3$621 AUD
Retailer 12$629 AUD
Retailer 9$681 AUD
Retailer 4$709 AUD
Retailer 7$733 AUD
Retailer 8$733 AUD
Retailer 2$850 AUD
Retailer 11$1,025 AUD
Retailer 5$1,056 AUD
MOH London$1,582 AUD
Retailer 6$2,611 AUD

38 data points across 12 retailers

14 retailers$584 AUD to $1,056 AUD

B+
Cheapest Retailer
-
$584 AUD
HK$3,200 HKD
B+
Retailer 2
-
$621 AUD
$435 USD
View
B+
Retailer 3
-
$629 AUD
$441 USD
View
Final sale: no returns
B+
Retailer 4
-
$681 AUD
$477 USD
View
Retailer 5
-
$703 AUD
$493 USD
View
Price last confirmed 34 days ago
B
Retailer 6
-
$733 AUD
$514 USD
View
B
Retailer 7
-
$733 AUD
$514 USD
View
Retailer 8
-
$812 AUD
$569 USD
View
Price last confirmed 34 days ago
B
Retailer 9
-
$850 AUD
£469 GBP
View
B
Retailer 10
-
$1,025 AUD
€684 EUR
View
B
Retailer 11
-
$1,056 AUD
ZAR 11,961 ZAR
View
Most Expensive
MOH London
07F84CED5 · Oct 29
$1,582 AUD
£873 GBP
View
Price under review
11 more retailers have this diamond
Prices start from $584 AUDSave up to $472 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
0.40ct Marquise
$584 AUD